If You Had To Choose A BCG.....

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Pisgah said:
Me? I have chosen #3 three times already, no regrets.
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Pisgah, when you chose that particular BCG, were you building AR's? Or, were you upgrading from a factory BCG to the PSA? Why did you choose that particular BCG over any others? How about head space, did you check it in each case?
I have built a few AR's with parts from PSA in the past. I never checked the head space, and, well, I am still here and typing this reply. :eek:
I'm sorry for all of the Q?'s, but, I am trying to learn as much about BCG's as I can to know which one to buy.
I watched a video made by Mrgunsngear Channel and he gave 4 selections to choose from; Spikes Tactical, Premium PSA, Colt, and BCM.

How To Pick / Select A Good AR-15 Bolt Carrier Group (BCG) In HD - YouTube
 
I don't think you can go wrong with any one of the three. I have #2, the PSA Premium w/logo. Very well built. Gas key is well staked. This was part of a PSA Lego build. Complete upper and lower from PSA. #2 and #3 are virtually identical except for the engraved PSA logo.

I also have an Aim Surplus Black Nitride BCG that replaced the one in my Bushmaster because of excessive head space. The NiB (Nickle Boron) is a matter of personal choice and I don't think necessarily makes a better BCG.

BCM would also be a very good choice, although if price is a major factor, go with either of the PSA Premium BCGs.

BTW, are you building an AR, or replacing a bad BCG? Or just wanting to upgrade your M&P 15?
 
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Disabled1 said:
Pisgah, when you chose that particular BCG, were you building AR's? Or, were you upgrading from a factory BCG to the PSA? Why did you choose that particular BCG over any others? How about head space, did you check it in each case?
I have built a few AR's with parts from PSA in the past. I never checked the head space, and, well, I am still here and typing this reply. :eek:
I'm sorry for all of the Q?'s, but, I am trying to learn as much about BCG's as I can to know which one to buy.
I watched a video made by Mrgunsngear Channel and he gave 4 selections to choose from; Spikes Tactical, Premium PSA, Colt, and BCM.

How To Pick / Select A Good AR-15 Bolt Carrier Group (BCG) In HD - YouTube
Click to expand...

I was building. Having experience with PSA parts in the past, I had full confidence in them, and they were on sale each time. The only difference between them and the Premium is the logo, and a logo ain't worth $10 to me! No, didn't check headspace, as I have found when properly assembling an AR with mil-spec parts it hasn't been necessary.
 
Thanks to all that replied. I went ahead and ordered this BCG from PSA;

http://palmettostatearmory.com/psa-...ll-auto-bolt-carrier-group-no-logo-39339.html

As I was talking to the PSA tech/rep on the phone about the BCG's he stated that the website team was updating the web page. The BCG that WAS $99.99 with FREE shipping was replaced by a price of $109.99 and NO FREE shipping. And, I saved a few dollars by not getting the PSA logo. Life is good!
Now, I can't wait until it gets here so I soak her down good with some GRIZZLY GREASE, install it in my AR-556, and shoot the BAJEEBUS out of it! :D
 
I've owned that AIM NiBx BCG. Not worth it. The only NiBx BCG that lived up to claims is the FailZero NiBx BCG. Out of the three listed, go for #3
 
None of the above. Take a look at the Smith Enterprises products. They're suppliers to the DOD rather than people who sell stuff other make.

While about every carrier is 8620 steel, I've seen bolts made of 4140, 4340, 8620 and 9310 steel. The first 3 all are claimed by the makers to meet mil-spec. 9310 is above and beyond.
 
I have Spike's Tactical (Nickel Boron coating) BCG, never had a bit of trouble with it and it cleans up easy. Since it is heavier due to the fact it is a full-auto BCG, I added a Spike's ST-T2 Tungsten Heavy Buffer - 4.0oz and a JP Enterprises tuned and Polished Extra Power AR-15 Carbine Buffer Spring to take up some of the recoil. This set up has been solid for me. :)
 
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BTW, about checking headspace: the gauge you really want to use is the NO-GO gauge. When used on a new barrel & bolt, it shouldn't allow the bolt to fully lock (rear of carrier protruting from the rear of the upper with light thumb pressure). This is supposed to ensure that once the bolt and barrel extension have worn off the high spots of both parts*, the headspace is still acceptable.

* If you look at the rear lug face of a bolt fired only a few times, you'll generally see very minor finish wear on several lugs. Several hundred rounds later, you'll see more finish wear on more lugs. After extensive use, you won't see finish on the rear of all the lugs. This is full bolt engagement caused by the bolt and barrel extension wearing off the high spots.
 
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